3840878

Information

• Patent Grant
• 3840878

• References
• Source

• Patent Number

  3,840,878

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • G01D9/34 - the variables being recorded in a predetermined sequence
  • B41J2/315 - characterised by selective application of heat to a heat sensitive printing or impression-transfer material
  • G06K15/22 - using plotters

• US Classifications

  • 346 - Recorders
  • 347 - Incremental printing of symbolic information